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MediumAI ML
In-memory database with basic SQL
1Give yourself 5 minutes
2Answer out loud, not in your head
3Then compare with the answer below
Reference answer
Then expect these follow-ups
How would you add `GROUP BY`?
`ORDER BY`?
Indexed lookups via B-trees?
How would you shard across 16 nodes?
How would you test it (correctness fuzzing vs property-based testing)?
Free to read · better with Enzo
Practice this out loud with Enzo
Enzo runs it as a mock interview, pushes back with follow-ups, and grades you on the rubric.
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